Online symptom checkers often misdiagnose problems, encouraging people to seek care for minor issues that don’t need immediate attention or incorrectly telling people with true emergencies that treatment can wait.

Students walk through metal detectors, the Metropolitan Opera searches the purses of patrons, and air travel involves long lines and security checks. But movie theaters are unlikely to introduce such stringent measures.

Randy Johnson, Pedro Martinez and John Smoltz became the first trio of pitchers inducted into the Baseball Hall of Fame in the same year as they joined Craig Biggio in Sunday's Class of 2015 at Cooperstown, New York.